<template>
  <div>
    <h2>我是父组件</h2>
    <MySon v-model='msg'></MySon>
  </div>
</template>

<script>
import MySon from "./components/MySon.vue";
export default {
  components: {
    MySon
  },
  data() {
    return {
      msg:0
    }
  },
  methods: {},
}
</script>

<style scoped></style>